testing: Converted sql to systemd

testing/tests/sql/multi-level-ca/posttest.dat

@@ -1,8 +1,8 @@
 carol::swanctl --terminate --ike home
 dave::swanctl --terminate --ike home
-carol::service charon stop 2> /dev/null
-dave::service charon stop 2> /dev/null
-moon::service charon stop 2> /dev/null
+carol::systemctl stop strongswan-swanctl
+dave::systemctl stop strongswan-swanctl
+moon::systemctl stop strongswan-swanctl
 moon::iptables-restore < /etc/iptables.flush
 carol::iptables-restore < /etc/iptables.flush
 dave::iptables-restore < /etc/iptables.flush